Based on the search results, it is not entirely clear what race the characters in Pixars "Elemental" are based on. However, the movie does celebrate diversity and features a romance between two characters from different elemental backgrounds: fire and water. The movie is not explicitly about race, but it can be seen as a metaphor for racial identity. The director of the movie, Peter Sohn, is a Korean-American man who based the movie on his own cultural experiences. Therefore, it is possible that the characters in the movie are meant to represent a diverse range of races and cultures.